SULLIVAN, Mo. — A Sullivan, Missouri, man has been sentenced to 17 years in prison in the death of his 21-year-old autistic son, who authorities said was found severely malnourished at approximately 50 to 55 pounds after enduring prolonged inadequate nutrition and care.
Lawrence A. Riehl, 62, of Sullivan, was sentenced Sept. 14, 2026, in Washington County Circuit Court after entering an Alford plea to first-degree involuntary manslaughter, second-degree domestic assault, and abuse of a person with a disability. Circuit Judge Brice Sechrest, sitting in a court that is part of Missouri’s 24th Judicial Circuit, imposed 10 years for manslaughter and seven years for domestic assault, ordering those felony sentences to run consecutively. Riehl also received a one-year sentence on the misdemeanor disability-abuse charge, running concurrently.
Deputies find 21-year-old dead inside home — On March 26, 2025, deputies found Riehl’s son dead on a bedroom floor, in a room deputies described as surrounded by trash, food containers, and human feces. He was severely malnourished, weighing approximately 50 to 55 pounds. Prosecutors have not publicly named him, citing his status as a vulnerable person; public obituary records separately identify a 21-year-old Raymond Lawrence Riehl as having died that date, listed as Lawrence Riehl’s son — treated here as a distinct, unofficial record. According to Law&Crime, it was the victim’s brother who first found him and woke their father, though other outlets credit deputies with the discovery.
Evidence of prolonged immobility — Investigators said his knees were found locked in place, evidence they believed was consistent with his having remained in the same position for an extended period.
Medical concerns documented a year before his death — Medical providers advised in March 2024 that he was severely underweight and losing muscle mass. Law&Crime has additionally reported — as a single-source detail — that records from December 2024 showed he had lost the ability to walk entirely. Public reporting doesn’t establish what follow-up, if any, occurred after the March 2024 warning.
Medical examiner determines cause of death — The medical examiner found he died of asphyxiation after choking on fecal matter; investigators said starvation had driven him to consume it in an effort to survive.
Investigation, arrest, and an amended charge — After a roughly three-month homicide investigation, Riehl was arrested in June 2025 on an original charge of second-degree murder and held without bond. Prosecutors later amended the charges to first-degree involuntary manslaughter (a Class C felony), second-degree domestic assault (a Class D felony), and abuse of a person with a disability (a Class A misdemeanor) after reviewing the evidence and autopsy findings.
What an Alford plea means — Riehl resolved all three counts through an Alford plea, in which a defendant doesn’t admit the underlying facts but concedes prosecutors have enough evidence to likely convict at trial. It still results in a formal conviction. He was not convicted of second-degree murder, the charge he originally faced.
Sentencing — Judge Sechrest’s consecutive 10- and 7-year terms plus the concurrent 1-year term produced the 17-year aggregate — the maximum available on the felony counts, per the prosecutor’s office. “No sentence can restore what was lost, but this outcome brings the case to a just and appropriate conclusion,” Prosecuting Attorney John I. Jones IV said.
Timeline: March 2024 (nutrition warning) → December 2024 (lost ability to walk, single-sourced) → March 26, 2025 (found dead) → June 2025 (arrest, murder charge) → 2026 (Alford plea) → Sept. 14, 2026 (sentencing).
Questions that remain — Authorities haven’t detailed his full care needs, how long he’d been immobile, what food and fluids he was receiving, what followed the March 2024 warning, or whether adult protective services had ever been involved. The story isn’t assuming answers where none exist in the public record.
Riehl is now serving his 17-year sentence in the Missouri Department of Corrections. The case is resolved, not pending.
Compiled from reporting by: Washington County Prosecuting Attorney’s Office, Washington County Sheriff’s Office, KFMO, First Alert 4/KFVS12, and Law&Crime.
